| 摘要 |
A further material is introduced into an open cavity (50) of a profile (41-47) following extrusion and cooling. The cavity is then closed at a region of connection (53) along the extrusion (6). An Independent claim is included for the corresponding product. Preferred features: In an otherwise similar variant, the cavity is produced in closed form, cut open, injected with further material, and re-closed. After closure, further cooling and/or calibration take place. Material introduction takes place with extrusion. The material is foamed after introduction. Inserts are introduced. Closure comprises a mechanical connection, welding and/or further extrusion. Once closed, the object is fixed in its final form. Heat is first extracted from the extrusion, from those surfaces of the cavity facing or turned away from the introduced material. The cavity is cooled to a temperature of 0 deg C-120 deg C, preferably 60 deg C-70 deg C. Material forming the extrusion is subjected to a reduced pressure, following forming. Before introduction of additional material, a surface is coated with bonding agent. The material is heated before introduction to 0 deg C-40 deg C, preferably 15 deg C-25 deg C. A gas pressure for foaming is set to no greater than atmospheric. |
